<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>用户个人主页</title>
</head>
<body>
    Request域中获取用户名：${username}<br/>
    Cookie中获取用户名：${cookie.username.value}<br/>
    Session中获取用户名：${USERNAME_IN_SESSION}<br/>
    <a href="/list">收件箱</a>
</body>
</html>
